Sharp ER-A530 Service Manual download pdf (Page 8)

ER-A520U/ER-A530U HARDWARE DESCRIPTION

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CHAPTER 4. HARDWARE DESCRIPTION

1. BLOCK DIAGRAM

ER-A520 and ER-A530

2. MEMORY MAP

2-1. ADDRESS MAP

CPU

MITSUBISHI M30802GP 12MHz

(INTERNAL RAM 10KB)

EXTERNAL MEMORY

STD RAM 1MB

OPT RAM 2MB

FLASH ROM 1MB

PRINTER

PR58HM

2MB 1MB1MB

PRINTER

CPU

RAM 10KB

4 to 16

DECODER

RS232C CH1

DRIVER, SENSOR

KEY & SW

㪧㪦㪮㪜㪩㩷㪪㪦㪬㪚㪜

DRAWER2

DRAWER2

KEY SCAN

KEY SCAN

DIG DRIVER

DIG DRIVER

SEG DRIVER

SEG DRIVER

KEY RETURN

KEY RETURN

RAM OPT RAM FROM

PO

PUP

PUP

LED

LCD

16 digits

7 digits

x2LINE

RS232C CH2

DRAWER1

DRAWER1

CI

5V

500000h

600000h

700000h

800000h

900000h

A00000h

B00000h

C00000h

D00000h

E00000h

F00000h

FFFFFFh

F-ROM(1MB) EPROM(1MB)

EPROM(1MB) F-ROM(1MB)

NOT USED

NOT USED

NOT USED

INTERNAL

AREA

(1BCLK:0WAIT)

Microprocessor mode : MODE0

IPLION0# "L" IPLON0# "H"

EXTERNAL

AREA0

(2BCLK:1WAIT)

EXTERNAL

AREA1

(3BCLK:2WAIT)

EXTERNAL

AREA2

(3BCLK:2WAIT)

EXTERNAL

AREA3

(2BCLK:1WAIT)

SFR AREA

EXTERNAL I/O

INTERNAL RAM AREA(10KB)

INTERNAL RESERVE AREA

NOT USED

NOT USED

EXPANSION SRAM(UP-S02MB)

400000h - 5FFFFFh

400000h - 5FFFFFh

EXPANSION SRAM

(UP-S04MB)

000000h

000400h

000800h

100000h

200000h

300000h

400000h

STD SRAM(1MB)

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 32 33

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